/* Minimal, utility-first-ish */
:root{--fg:#1f2937;--bg:#ffffff;--muted:#6b7280;--brand:#2563eb;}
*{box-sizing:border-box}body{margin:0;color:var(--fg);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;line-height:1.6}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:0 16px}
.flex{display:flex;gap:16px}.between{justify-content:space-between;align-items:center}
.site-header{border-bottom:1px solid #e5e7eb;background:#fff;position:sticky;top:0;z-index:20}
.logo{font-weight:700;font-size:20px;color:#111827}
.nav a{margin-left:16px;color:#111827}
.hero{padding:48px 0;background:linear-gradient(180deg,#f8fafc,#fff)}
.hero h1{font-size:28px;margin:0 0 8px}.cta-row{margin-top:16px}
.btn{display:inline-block;border:1px solid #cbd5e1;padding:10px 14px;border-radius:10px}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.cards{padding:32px 0}.card-list{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.card{padding:16px;border:1px solid #e5e7eb;border-radius:12px;background:#fff}
.grid-2{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.site-footer{margin-top:40px;padding:24px 0;border-top:1px solid #e5e7eb;background:#fff}
.note{color:var(--muted);font-size:14px}
.form-embed iframe{border:1px solid #e5e7eb;border-radius:12px;background:#fff}
@media (max-width:640px){.nav a{margin-left:12px}}